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Blow-filled soil with high water content has poor engineering characteristics such as low strength, high water content and structural instability, etc. A new type of curing agent researched in-house was used to cure the blow-filled soil in the Binhai area of Tianjin, to achieve the properties of lightweight and high strength. In order to investigate the factors affecting the strength of blow-fill cured soil, the blow-fill cured soil was subjected to unconfined compression test, triaxial shear test and microstructure test. The results show that: The unconfined compressive strength of blow-fill cured lightweight soil is positively correlated with its density; The alkaline environment and salt content are favourable to the strength of blow-fill cured lightweight soil when the pH value is less than 11.4 and the salt content is lower than 1%, and the strength growth of cured soil is inhibited when the salt content is higher than this limit, respectively. When the salt content and pH value are low, the soil shows strain softening phenomenon, and the cohesion and internal friction angle of blow-fill cured lightweight soil gradually increase with the increase of salt content and pH value. The change mechanism of the strength of blow-fill cured lightweight soil with density, salt content and pH is explained from the microscopic level by nitrogen adsorption test and SEM scanning electron microscope test. The research results can provide a theoretical basis and reference for engineering practice.

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高含水率吹填土具有强度低、含水率高、结构不稳定等不良工程特性,采用自行研究的新型固化剂对天津滨海地区吹填土进行固化处理,以期达到轻质高强的性能。为探究吹填固化土强度影响因素,对吹填固化土进行无侧限抗压试验、三轴剪切试验和微观结构测试。结果表明:吹填固化轻质土的无侧限抗压强度与其密度成正相关;碱性环境和含盐量在pH值小于11.4、含盐量低于1%时有利于吹填固化轻质土强度的提高,超过此界限会分别抑制固化土的强度增长;当含盐量和pH值较低时,土体出现应变软化现象,随着含盐量、pH值增大,吹填固化轻质土的黏聚力和内摩擦角逐渐增大;通过氮气吸附试验、SEM扫描电镜试验从微观层面上解释了吹填固化轻质土强度随密度、含盐量、pH的变化机理。研究成果可为工程实际提供理论依据和借鉴参考。

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杨爱武(1971—),男,安徽桐城人,博士,教授、博士生导师,从事软黏土力学特性及土体微观结构研究。E-mail:

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杨爱武(1971—),男,安徽桐城人,博士,教授、博士生导师,从事软黏土力学特性及土体微观结构研究。E-mail:

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杨爱武(1971—),男,安徽桐城人,博士,教授、博士生导师,从事软黏土力学特性及土体微观结构研究。E-mail:

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滨海高含水率吹填土轻质固化技术及微观机理
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杨爱武 1 , 刘昊轩 1 , 韩英杰 2
地下空间与工程学报 | 理论与试验研究 2026,22(2): 565-575
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地下空间与工程学报 | 理论与试验研究 2026, 22(2): 565-575
滨海高含水率吹填土轻质固化技术及微观机理
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杨爱武1 , 刘昊轩1, 韩英杰2
作者信息
  • 1.东华大学 环境科学与工程学院,上海 201620
  • 2.天津城建大学 天津市软土特性与工程环境重点实验室,天津 300384
  • 杨爱武(1971—),男,安徽桐城人,博士,教授、博士生导师,从事软黏土力学特性及土体微观结构研究。E-mail:

Research on Lightweight Curing Technology of Coastal High Moisture Content Blowfill and Its Micro-Mechanisms
Aiwu Yang1 , Haoxuan Liu1, Yingjie Han2
Affiliations
  • 1.School of Environmental Science and Engineering, Donghua University, Shanghai 201620, P. R. China
  • 2.Tianjin Key Laboratory of Soft Soil Characteristics and Engineering Environment, Tianjin Chengjian University, Tianjin 300384, P. R. China
出版时间: 2026-04-20 doi: 10.20174/j.JUSE.2026.02.18
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高含水率吹填土具有强度低、含水率高、结构不稳定等不良工程特性,采用自行研究的新型固化剂对天津滨海地区吹填土进行固化处理,以期达到轻质高强的性能。为探究吹填固化土强度影响因素,对吹填固化土进行无侧限抗压试验、三轴剪切试验和微观结构测试。结果表明:吹填固化轻质土的无侧限抗压强度与其密度成正相关;碱性环境和含盐量在pH值小于11.4、含盐量低于1%时有利于吹填固化轻质土强度的提高,超过此界限会分别抑制固化土的强度增长;当含盐量和pH值较低时,土体出现应变软化现象,随着含盐量、pH值增大,吹填固化轻质土的黏聚力和内摩擦角逐渐增大;通过氮气吸附试验、SEM扫描电镜试验从微观层面上解释了吹填固化轻质土强度随密度、含盐量、pH的变化机理。研究成果可为工程实际提供理论依据和借鉴参考。

高含水率吹填土  /  轻质固化技术  /  无侧限抗压强度  /  剪切强度  /  微观机理

Blow-filled soil with high water content has poor engineering characteristics such as low strength, high water content and structural instability, etc. A new type of curing agent researched in-house was used to cure the blow-filled soil in the Binhai area of Tianjin, to achieve the properties of lightweight and high strength. In order to investigate the factors affecting the strength of blow-fill cured soil, the blow-fill cured soil was subjected to unconfined compression test, triaxial shear test and microstructure test. The results show that: The unconfined compressive strength of blow-fill cured lightweight soil is positively correlated with its density; The alkaline environment and salt content are favourable to the strength of blow-fill cured lightweight soil when the pH value is less than 11.4 and the salt content is lower than 1%, and the strength growth of cured soil is inhibited when the salt content is higher than this limit, respectively. When the salt content and pH value are low, the soil shows strain softening phenomenon, and the cohesion and internal friction angle of blow-fill cured lightweight soil gradually increase with the increase of salt content and pH value. The change mechanism of the strength of blow-fill cured lightweight soil with density, salt content and pH is explained from the microscopic level by nitrogen adsorption test and SEM scanning electron microscope test. The research results can provide a theoretical basis and reference for engineering practice.

high moisture content blown fill  /  lightweight curing technology  /  unconfined compressive strength  /  shear strength  /  micro-mechanisms
杨爱武, 刘昊轩, 韩英杰. 滨海高含水率吹填土轻质固化技术及微观机理. 地下空间与工程学报, 2026 , 22 (2) : 565 -575 . DOI: 10.20174/j.JUSE.2026.02.18
Aiwu Yang, Haoxuan Liu, Yingjie Han. Research on Lightweight Curing Technology of Coastal High Moisture Content Blowfill and Its Micro-Mechanisms[J]. Chinese Journal of Underground Space and Engineering, 2026 , 22 (2) : 565 -575 . DOI: 10.20174/j.JUSE.2026.02.18
  • 国家自然科学基金(42377141; 42177119; 51978440)
  • 中央高校基本科研业务专项资金(2232021A-07)
2026年第22卷第2期
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doi: 10.20174/j.JUSE.2026.02.18
  • 接收时间:2025-05-09
  • 首发时间:2026-06-17
  • 出版时间:2026-04-20
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  • 收稿日期:2025-05-09
基金
国家自然科学基金(42377141; 42177119; 51978440)
中央高校基本科研业务专项资金(2232021A-07)
作者信息
    1.东华大学 环境科学与工程学院,上海 201620
    2.天津城建大学 天津市软土特性与工程环境重点实验室,天津 300384
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2种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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